Another company plans to issue $20-$year bonds with a face value of $$1,000$ and an annual coupon rate of $10\%.$ The market price of similar bonds is $$1,098.$ Flotation costs are estimated to be $5\%$ for each bond. If interest payments are made annually, and the company$$s marginal tax rate is $34\%,$ what is the after$-$tax cost of debt?

$5\mathrm{.}89\%$

$6\mathrm{.}28\%$

$8\mathrm{.}03\%$

$9\mathrm{.}51\%$